Java ParsePosition setErrorIndex()用法及代碼示例

java.text.ParsePosition類的setErrorIndex()方法用於設置可能發生解析錯誤的索引。

用法:

public void setErrorIndex(int ei)

參數：此方法將整數ei作為參數，可能會發生解析錯誤。

返回值：此方法無返回值。

下麵是說明setErrorIndex()方法的示例：

範例1：

// Java program to demonstrate 
// setErrorIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(1); 
  
            // set index for the parsing error 
            // using setErrorIndex() method 
            pos.setErrorIndex(3); 
  
            // getting the current 
            // ParsePosition of 
            int i = pos.getErrorIndex(); 
  
            // display result 
            System.out.println( 
                "index at which error occurred:"
                + Integer.toString(i)); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}

輸出：

index at which error occurred:3

範例2：

// Java program to demonstrate 
// setErrorIndex() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // new ParsePosition Object 
            ParsePosition pos 
                = new ParsePosition(500); 
  
            // set index for the parsing error 
            // using setErrorIndex() method 
            pos.setErrorIndex(3000); 
  
            // getting the current 
            // ParsePosition of 
            int i = pos.getErrorIndex(); 
  
            // display result 
            System.out.println( 
                "index at which error occurred:"
                + Integer.toString(i)); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println(e); 
        } 
    } 
}

輸出：

index at which error occurred:3000

參考： https://docs.oracle.com/javase/9/docs/api/java/text/ParsePosition.html#setErrorIndex-int-

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 ParsePosition setErrorIndex() method in Java with Example。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。